If there's one thing people really enjoy, it's losing their items and money.

I think if part of the design philosophy of the game from day 1 was to
allow items and/or cash to be taken from other players, it could
definitely work. But ripping the security blankey off now just wouldn't
end well, it's not what people expect, it's not what they've been
playing for.

Anytime you killed Mal’Ganis in the Stratholme level of Warcraft 3:
Reign of Chaos, you only succeeded in slowing him down. His body would
reform shortly thereafter to continue taunting Arthas and encourage him
to take the path of insanity… and power.

No matter what happens to Mal’Ganis in the upcoming Caverns of Time
instance, his mission to drive Arthas to Frostmourne will not be undone.

Slaughtering is a strong word, maybe it would be better to say that you
are aiding the pround Prince Arthas in Straholme as he uses his divine
Paladin powers to purify the streets of vile evil undead creatures …
and burns down houses.

Bornakk
At this time, the nation of Gilneas which stands behind the Greymane
Wall remains a secluded mystery. One day we may see the portcullis and
the region open to visitors and explorers alike, but we do not know
when or if that day will come.

While we have no plans for Northrend to appear like an island of
paradise, we do want the zones to bring a wide variety of scenery and
environments for all players to enjoy. Making a continent one big block
of ice didn’t seem to fit with this ideology too well.

Along with this, the armor models that were used in the original
Naxxramas might be reused as a new tier of armor. They were designed to
feel like what you would find in this type of dungeon and they really
did a great job of it.

- "Arthas is actually luring the Horde and the Alliance and try to pit
them against each other. The reason for this is because Arthas wants to
bring them into his hold and take them under his power. He has things
that cannot be defeated with his current sort of mindless, brainless
minions, and he needs you".
- Right now they are thinking any weapon can be inscribed by the
Death Knight, but they might do some Death Knight specific weapons at a
later stage.
- Ulduar is going to be one of the raid instances.
- There will be several instances taking place in Azjol'Nerub, an underground zone populated by the Nerubian (spider race).
- Malygos, the blue dragon, will be a singular raid encounter (Onyxia like) in the Nexus (located in the center of Coldarra).
- Naxxramas is going to be retuned for level 80, 25 people, and make it the easiest raid instance for 25 people in Northrend.
- Alterac Valley is being changed to correct some balance issues, also they are not planning to introduce siege weapons in AV.
- They got an Azshara battleground called "Azshara crater", they
halted development of that and they might go back to that at a future
date.
- "The Nexus is going to be the dungeon in Borean Tundra. It has 3
wings to it." That instance looks like a floating cone of rings, so it
cant really be categorized as a winged dungeon:
* A 5-man instance for level 70-71 (Ice Caverns )
* A level 80 instance that leads to the last wing and raid instance.
* The third and last wing is a 25-man raid instance where you will fight Malygos.
- Mal'ganis will be the final boss of the Cavern of Time instance: Stratholme.
- Sunwell Plateau will come in the patch after Zul'Aman, and
Sunwell Plateau will feature a 6 boss 25 person raid dungeon along with
a 5 person normal and heroic instance.
- "the Sunwell is the place where Arthas marched the Scourge
through Quel'Thalas and raze Quel'Thalas, raze Silvermoon City and then
trashed the Sunwell. Well our storyline's gonna turn back as someone, a
famous character, I can't say who yet, re-ignites the sunwell and
summons Kil'jaeden back for the players to fight."

* Haste: Haste has been rebalanced. It has returned to the ratios
from the launch of Burning Crusade. Melee attacks and spell casts will
now benefit at identical rates from haste. This change results in a
reduction in the benefit of haste for melee attacks and an increase in
the benefit for spellcasters.

* Flask of Shadow Fortification will transform into the Flask of
Pure Death. This new flask increases Frost, Fire, and Shadow spell
damage.
* Flask of Arcane Fortification will transform into the Flask of
Blinding Light. This new flask increases Holy, Nature, and Arcane spell
damage.
* A new flask that increases all resists and stats has been added to the Violet Eye reputation vendor.

Drysc confirmed the patch wont be coming today on live servers (Source).